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Paper_Impacts of climate change and adaptation strategy selection under constrained conditions in BenTre province, Vietnam.pdf Public Deposited

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  • It can not be denied that climate change is now an overriding environmental issue challenging humanity. Scientific research has proven that Vietnam’s 10 most vulnerable provinces are among the top 25% most susceptible regions in South East Asia. Eight of those ten provinces including Ben Tre province belong to the Mekong delta. Thus, in this study we aimed at an investigation on the impacts of climatic events, specifically sea level rise, salt water intrusion, typhoon, and erosion, on three coastal communes in Ben Tre, and adaptations to mitigate impacts. Three focus group discussions (FGDs) were carried out to assist in the identification of impacts of climatic events and vulnerable sectors. Results from the FGDs were the hazard mapping, the vulnerability matrix and the historical timeline of climatic hazards. The FGDs was followed by face to face survey of 300 households. Information on the impacts of climate risks, adaptations, awareness and preparedness of climate change was solicited. Cost-effectiveness analysis (CEA) was performed to evaluate two projects: a sea dike and an irrigating system. Findings showed that sea level rise is the most disturbing incident that threatens the future of the province in that it jeopardizes agriculture and aquaculture, the main stay of the local economy as well as it forces households’ relocation. Follow-up is salt water intrusion which immensely hinders agriculture and aquaculture as well as troubles households’ everyday routines. Total loss from the most recent salt water intrusion mounted to USD 77,151. Devastating typhoon Durian, despite its ephemeral presence, resulted in USD 154,155 loss. Compared to these incidents which relate to climate changes, erosion appears to be least serious. Total loss from the most recent erosion climbed to USD 28,492. In order to cope with climatic risks, households primarily undertook simple precautionary actions that reflect financial and technical limitations at the household level. An assessment of households’ awareness and preparedness of climate change revealed that 98% of respondents have no or a little knowledge of climate change; 65% of respondents have not made any adaptive preparations to handle climate change events. Analysis of two preventive measures to protect communities from ravages of climate change using CEA ratios indicated that the irrigating system is more cost effective than the sea dike. The result justified the implementation of the irrigating system ahead of the sea dike even though that the two projects are unaffordable at a time.
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